Setecho

I'm training for a bodybuilding competition with a coach who works with me online, so he only knows what I send him. In the gym I wrote down every set. Every week I typed him a check-in: my weight, food, sleep, training and progress photos, about 25 minutes of typing. And the one thing he programs for, whether my heaviest set of each lift really went to failure, he could never see. Setecho is the iPhone app I built for that, in ten days, and used for real the whole time. It does three things: 1. A hands-free workout. The phone sits on a tripod. I say "done, twelve" and the set is logged; if I walk away and say "done" from across the room, it still hears me. For a filmed set, SAM 3.1 tracks the weight through every rep and code counts them and measures how much the last reps slowed, which is how sports science estimates reps in reserve. During rest the app says the count back ("Set 1, was that 11?" when it isn't sure), then the measured result: 11 reps, slowed 45%, failure. My coach's own rule sets the next weight. I never touch my phone. 2. An easy way to send my data back and forth with my coach. On check-in day I just talk to it. It fills in what it can from my scale, food log and watch through Apple Health, shows where every number came from, takes my four progress photos, and sends the check-in to WhatsApp in his exact format and order. 25 minutes of typing became about seven, and I'm only talking for one of them. 3. His reply becomes plan changes. He answers on WhatsApp, with text or a voice note; I share it into Setecho and each change shows up next to his exact words. Nothing changes until I approve it. He doesn't have to install anything. Setecho never coaches. No form judgments, no nutrition advice, no rules it invents. Every number comes from code, Apple Health or my own words, never from a model, and a validator checks every spoken line. Everything in the demo video is real: my coach's program, a real week of training, the check-in I sent him on Oct 29, his 1:19 voice-note reply on Oct 30 ("Keep doing what we're doing, it's working"), and one unbroken take of the measured bench top set on Nov 2. The first week's numbers: a workout that took 64 minutes by hand took 53 with Setecho; the weekly check-in went from 25:00 to 7:26. backend/scripts/evidence.py rebuilds every number from the raw exports, and the README's "For judges" section reruns SAM's measurement of a real set with no key and no network. 749 offline backend tests, 335 iOS tests, 250+ commits.